windiff-version-diff-analysis SKILL.md skillA
windiff-version-diff-analysis from ergrelet/windiff is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add ergrelet/windiff/windiff-version-diff-analysis@git:20260816.956b237Pins git:20260816.956b237 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- ergrelet/windiff
- Path
skills/windiff-version-diff-analysis/SKILL.md- Versions recorded
- 1
- Latest version
- git:20260816.956b237, committed Aug 16, 2026
- Size
- 9,939 bytes
- Repository stars
- 395
- License
- GPL-3.0
Generate and interpret security-research diffs between Windows versions or patch levels using this repo's WinDiff CLI and databases. Use when comparing Windows builds or binaries such as ntoskrnl.exe, ntdll.dll, win32k*.sys, ci.dll, or cng.sys to find changed syscalls, symbols, types, mitigation flags, callbacks, ETW/EtwTi telemetry, code-integrity behavior, drivers, or attack surface. Explain likely intent and security relevance with Windows-internals knowledge, and frame findings for…
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
# WinDiff Version Diff Analysis Compare two Windows builds and turn the raw symbol/type/syscall delta into a security-research report: what was added, what it probably *does*, and why it matters for attack surface, exploitation, or defense. Run this skill from a **WinDiff** repository checkout. It uses `windiff_cli` to generate the per-binary JSON databases, then diffs and interprets them. The interpretation is the point: explain intent from Windows internals conventions instead of merely listing symbols. ## Locate bundled resources Resolve all `scripts/` and `references/` paths relative to this `SKILL.md`, not relative to the current working directory and not through a harness-specific directory such as `.claude/` or `.agents/`. Before running a bundled script, set `SKILL_DIR` to the absolute directory containing this file. The examples below assume that has been done: ```bash SKILL_DIR="<absolute directory containing this SKILL.md>" ``` If separate shell-tool calls do not share environment, substitute that absolute path for `$SKILL_DIR` in each command instead of relying on prior shell state. Also identify the repository root (the directory containing `windiff_cli/`, …
Read the whole file at its exact version.
How to install
mdr add ergrelet/windiff/windiff-version-diff-analysis@sha256:12bb8af246cad28bThe line at the top of this page pins the label git:20260816.956b237, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_gd5s2rnkvfm3nikr)
2 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 1 version of this file, committed on Aug 16, 2026.
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (9939 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
- pass: No link to a raw IP address
- pass: No script tag
Source
ergrelet/windiff · 395 stars · license GPL-3.0 · pushed 2026-11-08 · branch master
API
GET https://markdownregistry.com/api/v1/artifacts/art_gd5s2rnkvfm3nikr GET https://markdownregistry.com/api/v1/resolve?ref=ergrelet/windiff/windiff-version-diff-analysis GET https://markdownregistry.com/api/v1/blob/12bb8af246cad28b9c83d35c404cc557fde61cbf8b5ae113cc8689706cd4d4e1
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.